cp's OEIS Frontend

This is a front-end for the Online Encyclopedia of Integer Sequences, made by Christian Perfect. The idea is to provide OEIS entries in non-ancient HTML, and then to think about how they're presented visually. The source code is on GitHub.

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A110133 Numbers which are the sides that belong to only one primitive Pythagorean triangle.

Original entry on oeis.org

3, 4, 7, 8, 9, 11, 16, 19, 23, 27, 31, 32, 43, 47, 49, 59, 64, 67, 71, 79, 81, 83, 103, 107, 121, 127, 128, 131, 139, 151, 163, 167, 179, 191, 199, 211, 223, 227, 239, 243, 251, 256, 263, 271, 283, 307, 311, 331, 343, 347, 359, 361, 367, 379, 383, 419, 431, 439
Offset: 1

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Author

Lekraj Beedassy, Jul 13 2005

Keywords

Comments

Powers of 2 starting with 2^2=4 and powers of primes of form 4k+3; none is a hypotenuse. - Ray Chandler, Jul 21 2005
Along with 2, the natural numbers that are Gaussian prime powers. Morgan L. Owens, Nov 21 2014

Crossrefs

Cf. A024357, A024363, A110134, A002145

Extensions

Extended by Ray Chandler, Jul 21 2005
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Started in 1964 by Neil J. A. Sloane | Maintained by The OEIS Foundation Inc.

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